Glycerol Ester Formulation for Head Lice Elimination
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Solution Overview
Problem
Current head lice treatments are often associated with side effects, skin irritation, and limited effectiveness, particularly in eliminating nits, and existing products may contain harsh chemicals or require multiple applications.
Innovation Solution
A formulation containing glycerol esters, such as glycerol monostearate citrate, monooleate, and monolaurate, which are applied topically and are easy to use, providing quick and effective immobilization and removal of head lice without causing skin irritation or health hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical insecticides or acaricides are used to eliminate ectoparasite infestations, then the effectiveness against lice and mites is improved, but side effects such as skin irritation, allergies, and toxicity increase
Solution Approach 1:
The patent uses food-grade emulsifiers (E 471-E 475) that are inherently safe and biodegradable, replacing persistent chemical insecticides. These substances are approved for human consumption and break down quickly in the environment, eliminating long-term toxicity while maintaining lice-killing effectiveness through physical suffocation rather than chemical poisoning.
Solution Approach 2:
The invention combines food-grade emulsifiers with specific fatty acid esters to create a composite formulation that leverages the emulsifying properties to deliver the active ingredient effectively. This composite approach allows the use of mild, food-approved substances in combination to achieve lice elimination without the harsh side effects of traditional insecticides.
2Object-affected harmful factors
If fatty acid fractions from coconuts are used against lice, then the safety profile is improved, but the smell becomes very unpleasant and skin irritation occurs
Solution Approach 1:
The patent modifies the fatty acid chain length parameters by using C 12-C 22 fatty acid esters instead of shorter-chain coconut fatty acids. This parameter change in molecular structure reduces the unpleasant odor and skin irritation while maintaining the ability to suffocate and kill lice, thereby improving the safety and acceptability of the treatment.
3Object-affected harmful factors
If neem extracts or terpenes are used against lice, then the natural safety is improved, but the effectiveness against nits is limited requiring multiple applications
Solution Approach 1:
The patent changes the molecular parameters by using longer-chain fatty acid esters (C 12-C 22) that have different physical properties compared to neem or terpene compounds. These longer-chain esters provide both natural safety and enhanced effectiveness against nits, achieving complete lice elimination in a single application without requiring repeated treatments.
4Reliability
If isopropyl myristate is used as an active ingredient, then the lice-killing effectiveness is improved, but skin permeability increases allowing harmful substances to enter the body
Solution Approach 1:
The patent replaces isopropyl myristate with food-grade emulsifiers that do not have skin-permeating properties. These emulsifiers work by physical suffocation rather than chemical penetration, killing lice locally without allowing systemic absorption of harmful substances through the skin, thereby eliminating the permeability hazard while maintaining effectiveness.
Data Source
AI summary
Disclosed is an agent against parasitic arthropods, containing as an active ingredient glycerol, which is mono- or di-esterified with one or two different or identical aliphatic, saturated or unsaturated C6 C18 carboxylic acids, and preferably additionally mono- or di-esterified with acetic acid, lactic acid, citric acid, diacetic acid or tartaric acid. The agent according to the invention is used against blood- and/or lymph-sucking or skin-penetrating insects and mites in humans, domestic, companion and farm animals, or against insects or mites in buildings or on plants, e.g., head lice, biting lice, fleas, plant lice, scale insects or thrips, mange mites, fur mites, ear mites, grass mites and house dust mites or spider mites.The product can be the sole or additional active ingredient in solutions, shampoos, foams, soaps, sprays, aerosols, emulsifiable concentrates, lotions, gels, creams, powders, pastes, granules, or dusts that are applied to the skin, hair, or fur, or laid out as bait. The product can also facilitate the removal of lice eggs or nits from the hair or have a cosmetic, skin-conditioning, hair-conditioning, or fur-conditioning effect. The product can also be applied in buildings, animal husbandry, or on ornamental and useful plants.